Deleting an IP address
Enter a command similar to the following to delete an IP address.
device(config-if-1/1/1)# no ip address 10.1.2.1
This command deletes IP address 10.1.2.1. You do not need to enter the subnet mask.
To delete all IP addresses from an interface, enter the following command.
device(config-if-1/1/1)# no ip address *